CHAPTER I TO THE RESCUE

CHAPTER II ON THE BRINK

CHAPTER III A SURPRISE

CHAPTER IV A DELAYED LETTER

CHAPTER V ANOTHER SURPRISE

CHAPTER VI SOMETHING QUEER

CHAPTER VII IN NEW YORK

CHAPTER VIII OFF FOR PANAMA

CHAPTER IX THE LITTLE BOX

CHAPTER X THE SECRET CONFERENCE

CHAPTER XI ALONG THE CANAL

CHAPTER XII ALMOST AN ACCIDENT

CHAPTER XIII IN THE JUNGLE

CHAPTER XIV IN DIRE PERIL

CHAPTER XV IN CULEBRA CUT

CHAPTER XVI THE COLLISION

CHAPTER XVII THE EMERGENCY DAM

CHAPTER XVIII THE BIG SLIDE

CHAPTER XIX JOE'S PLIGHT

CHAPTER XX AT GATUN DAM

CHAPTER XXI MR. ALCANDO'S ABSENCE

CHAPTER XXII A WARNING

CHAPTER XXIII THE FLASHLIGHT

CHAPTER XXIV THE TICK-TOCK

CHAPTER XXV MR. ALCANDO DISAPPEARS